/*
 * Copyright 2021-present StarRocks, Inc. All rights reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.starrocks.data.load.stream;

/** Factory for {@link LabelGenerator}. */
public interface LabelGeneratorFactory {

    // Create a label generator for the specified db and table.
    LabelGenerator create(String db, String table);

    class DefaultLabelGeneratorFactory implements LabelGeneratorFactory {

        private final String labelPrefix;

        public DefaultLabelGeneratorFactory(String labelPrefix) {
            this.labelPrefix = labelPrefix == null ? "" : labelPrefix;
        }

        @Override
        public LabelGenerator create(String db, String table) {
            return new LabelGenerator.DefaultLabelGenerator(labelPrefix);
        }
    }
}
